Sewing-machine motor.



J. ALBRIGHT.

SEWING MACHINE MOTOR.

APPLICATION FILED DE0.3,1908v Patented July 6, 1909v 2 SHEETS-SHEET 2.

w; eooza NIED STATES PAEENT QFFICE.

JESSIE ALBRIGHT, OF GREENVIEW, ILLINOIS, ASSIGNOR OF ONE-THIRD TO WILLIAM BEHRENS, OF GREENVIEW, 11.; INOIS. i

SEWING-MACHINE MOTOR.

Application filed December 3, 1908.

To all whom it may concern:

Be it known that I, JEssrE Armnonr, a citizen of the United States, residing at Greenview, in the county of Menard and State of Illinois, have invented certain new and useful Improvements in Sewing-Machine Motors, of which the following is a specification.

This invention relates to motors and more particularly to motors designed for operating sewing machines, and has for its ob ect to provide a motor of this type which may be attached to a sewing machine to operate the latter and which may be easily started and stopped. I Another object is to provide a motor givmg a maximum of power while occupying a minimum of space.

Other objects and advantages will be apparent from the following description and it will be understood that changes in the specific structure shown and described may be made within the scope of the claims without departing from the spirit of the invention.

In the drawings forming a portion of this specification and in which like numerals of reference indicate similar parts in the several views, Figure 1 is a reduced view showing the present motor attached to a sewing machine, Fig. 2 is a view of the motor showing one side of the casing removed and the adjacent wall of the frame broken away, Fig. 3 is a top plan, Fig. 4 is a transverse section on line 44, of Fig. 3 showing the mounting of the connecting shaft, Fig. 5 is a detail view showing the connecting shaft and its mountings in perspective from the interior of the casing, Fig. 6 is a perspective view of the forward portion of the mechanism showing the brake structure. Fig. 7 is detail view showing the arrangement of the starting block.

Referring now to the drawings, there is shown a rectangular wooden casing 10 having a vertical slot'll formed in its forward wall 12. Thisslot has a plate 13 secured thereover against the outer face of the wall 12, the plate having a vertical slot 14 registering with the slot 11. The slot 14 receives the reduced neck 15 of a starting and sto pin block 16 which is shiftable verticall within the slot 11, the reduced neck 15 havmg a screw button 17 .engaged therewith Specification of Letters Patent.

Patented July 6, 1909.

Serial No. 465,864.

and lying outwardly of the plate 13, the screw button having a flange 18 extending laterally over the plate. The block 16 is c0nnected.with a brake mechanism to be later described.

Located within the casing, there is a spring motor including vertical side plates 20 and 21 respectively, and connecting bottom members 22. These bottom members extend transversely of the casing, the side plates extending longitudinally as shown.

A bearing plate 24 is secured to the inner face of one side wall A of the casing 10, this wall A lying adjacent to the side plate 20 of the motor frame. The adjacent side plate has a bearing opening 25 therein, receiving one end of a winding shaft 26, which is journaled at its opposite portion in the bearing plate 24. The winding shaft extends outwardly beyond the wall A of the casing, where it receives a removable crank 27.

A horizontal main power shaft 28 is journaled horizontally in the side plates 20 and 21 of the motor frame, and also in an intermediate parallel plate 30, this shaft 28 extending outwardly beyond the plate 20 and carrying a gear wheel 29 meshing with a pinion 31 carried by the shaft 26. Between the side plates 20 and 30, the shaft 28 carries a coil spring 31 and loosely mounted upon the shaft 28, there is a gear 32 which meshes with the pinion 33 carried by a gear 34, this pinion and gear being mounted upon a transverse shaft 35 journaled in the plates 30 and 21. The gear 34 also meshes with a pinion 36 carried by a gear 37 which is loosely mounted upon the shaft 28, between the gear 32 and the plate 21. The gear 37 meshes with the pinion 38 carried by a gear 39 which is mounted upon a transverse shaft 40 'ournaled in the plates 21 and 30.

The wall B of the casing, which is the wall opposite to the wall A, is provided with a in reality a passage through the wall, closed at its outer end by a plate 42 provided with a passage 43, somewhat elongated arcu ately, and lying concentric with a pivot screw 44 engaged in the plate. This pivot screw is en aged in a member 45 extending inwardl y and having a passage 46 therethrough which receives a shaft 47 carrying a pinion 48 at its inner end normally meshing .with the gear 39. The member 45 is movable recess 41 in its inner face, this recess being upon its pivot as shown, to vary the interl block will bring the brake into and out of meshing engagement of the pinion a8 with the gear 39 to compensate for wear. The outer end of the shaft 47 carries a member 49 which may be engaged with the operative mechanism of a sewing machine.

A transverse shaft 50 is journaled in the lower portion of the plates 21 and adjacent to the forward ends thereof, and this shaft carries a pinion 51 which meshes with the gear 39, the shaft also carrying a gear 52 meshed with a gear 53 carried by a fan shaft 54. A fan 55 is carried by the shaft 54 to act as a governor for the motor.

The shaft carries a drum 56 which receives thereagainst a brake lever 57. The brake lever is pivoted at its rearward end upon a stud -58 engaged in the plate 21 and at its forward end, the lever 57 is pivoted to a member 59 which extends transversely and is pivoted to a bracket 60 secured to the wall A in the casing. The portionof the member 59 to which the lever 57 is attached is thus movable vertically to bring the lever into and out of frictional engagement with the drum.

An upwardly extending bracket 61 is secured to the lower portion of the casing, and has an arm 62 pivoted thereto, this arm having a link 63 pivoted to the member 59. W hen the lever 62 is moved, therefore, the member 59 will be shifted to operate the brake. The opposite end of the lever 62 from the bracket 61 is connnected by means of a link 64 with the block 16 referred to in the foregoing and thus movement of the operative position.

llhat is claimed is 1. An operating motor for sewing machines comprising a plurality of longitudinally extending parallel plates, a transverse shaft journaled in the plates, a spring connected with the shaft for rotation thereof, means for revolving the shaft against the action of the spring to energize the spring, a gear loosely mounted upon the shaft, ratchet connections between the gear and the spring, a train of gearing operatively connected with the first named gear, a horizontally extending shaft, connections between said shaft and the gear train, said shaft being movable to vary the intermeshing engagement of certain of said gears, and means for holdin the mechanism a ainst 0 eration.

2. In a motor of the class described, the combination with a gear, of means for revolving the gear, a plate located adjacent to the gear, said plate having an arcuate slot therein, a member pivoted to the plate concentrically with the slot, a shaft ournaled in the member and extending through the slot, and a gear carried by the shaft and meshing with the first named gear, said member being movable upon its pivot to vary the intermeshing engagement of the gears.

in testimony whereof I aflix my signature, in presence of two witnesses.

JESSIE ALBRIGHT. Witnesses J. Arnnrenr,

WILLIAM Bnnnnrrs. 

